How can i ask list in extension

[Kumaraswamy]

@Kumaraswamy

int array = new int[list.size()]; int index = 0; for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; }

Just add this code, then do:

@Kumaraswamy

First do as mentioned above and just use:

GradientDrawable gradientDrawable = new GradientDrawable(
        (GradientDrawable.Orientation) orientation, array);

[Kumaraswamy]

You're trying to take list input from the user and turn it into gradient right?

[HIFI_APPS]

yes
but its just sample code its not main extension i will use for future purpose

[HIFI_APPS]

my code
int[] array = new int[list.size()]; int index = 0;for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; }

GradientDrawable gradientDrawable = new GradientDrawable(
(GradientDrawable.Orientation) orientation, array);

my error
[javac] C:\Users\GOD\appinventor-sources\appinventor\components\src\edu\hifiapps\Gradient\Gradient.java:50: error: cannot find symbol
[javac] int[] array = new int[list.size()]; int index = 0; for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; }
[javac] ^
[javac] symbol: variable list
[javac] location: class Gradient
[javac] C:\Users\GOD\appinventor-sources\appinventor\components\src\edu\hifiapps\Gradient\Gradient.java:50: error: cannot find symbol
[javac] int[] array = new int[list.size()]; int index = 0; for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; }
[javac] ^
[javac] symbol: variable list
[javac] location: class Gradient

[Kumaraswamy]

How can that error occur? It should NOT occur.

[HIFI_APPS]

i think it is because the ; is nearby it should be in each line end see my code

[Kumaraswamy]

@HIFI_APPS

symbol: variable list
[javac] location: class Gradient

I thought it's occured for Integer.parseInt
my mistake

[Kumaraswamy]

Can you please post you're new code?

[HIFI_APPS]

i posted and once more do u need as text or image

[Kumaraswamy]

Just wait, i will give you detailed example.

[HIFI_APPS]

i got answer from u when it wrk in app i will explain wait

[Kumaraswamy]

Also you can try this:

int[] array = new int[colors.size()];

        for (int i = 0; i < colors.size(); i++) {
            array[i] = Integer.parseInt(colors.get(i).toString());
        }

[HIFI_APPS]

yes
it worked actually

How can i ask list in extension

To convert integer array: @SimpleFunction public void example(YailList list) { int[] array = new int[list.size()]; int index = 0; for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; } } Now in the variable called array you have the values.

is answer
the main error is as said my code was like

int array = new int[list.size()]; int index = 0; for(String e : list.toStringArray()) { array[index] = Integer.parseInt(e); index++; }

@HIFI_APPS

i think it is because the ; is nearby it should be in each line end see my code

as said i changed it to

int array = new int[list.size()];
int index = 0;
for(String e : list.toStringArray()) {
array[index] = Integer.parseInt(e); index++;
}

also it showed error as for the word

@Kumaraswamy

list

in the

@Kumaraswamy

list.size()

@Kumaraswamy

list.toStringArray()

so in my case it is
colors.size()
and so

now my final code is

@SimpleFunction(description = "this block is where u put ur component,colors,u may have dout what is orientation it is where u put the green block i gave in gradients section")
public void SetGradientBackground2color(AndroidViewComponent component, Object orientation, YailList colors) {

// To set gradient colors as background, what we are actually going to 
// do is create a new GradientDrawable object and set it as 
// the background of the view. With this approach, it'd be possible to 
// create gradients programmatically without editing the manifest
// file which is currently not supported in App Inventor 2.

// Getting the reference to the View of the parameter component using 
// the getView() method of AndroidNonVisible class.
View view = component.getView();

// GradientDrawable is a subclass of Drawable class from Android
// support library. It is mostly used to create gradients.
// For more info visit: https://developer.android.com/reference/android/graphics/drawable/GradientDrawable
 int[] array = new int[colors.size()]; 
 int index = 0;
 for(String e : colors.toStringArray()) { 
 array[index] = Integer.parseInt(e); index++; 
 }

GradientDrawable gradientDrawable = new GradientDrawable(
(GradientDrawable.Orientation) orientation, array);

// Setting the gradientDrawable as the background of view.
view.setBackground(gradientDrawable);

}

[HIFI_APPS]

this might wrk i will also try it thanks a lot

[HIFI_APPS]

also thanks for ur detailed explanation here @Kumaraswamy

[Salman_Dev]

@HIFI_APPS

now my goal is to achieve unlimited colors

https://community.thunkable.com/t/extension-gradient-in-a-layout-colors-by-list/12508?u=taifun

[HIFI_APPS]

@HIFI_APPS

yes
but its just sample code its not main extension i will use for future purpose.

please see it

[Salman_Dev]

I just remind you and I want to give you tips, so you can create unique extensions.
Before creating an extension please check the extensions that are already available here :
https://puravidaapps.com/extensions.php

Tips for Search Extensions are available on that website :

1. Windows = Ctrl + F
2. Mac = Command + F

[HIFI_APPS]

@Salman_Dev

App Inventor Extensions | Pura Vida Apps

Tips for Search Extensions are available on that website :

1. Windows = Ctrl + F
2. Mac = Command + F

i even do the same any way ths